Is DOK7 p.Pro222= (c.666G>T) pathogenic?

DOK7 p.Pro222= (c.666G>T) is classified Likely benign in DOK7 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-09-19). Very rare (popmax 8.66e-05%, nfe); Associated with congenital myasthenic syndrome 10.

What condition is associated with DOK7 p.Pro222= (c.666G>T)?

DOK7 p.Pro222= (c.666G>T) is associated with congenital myasthenic syndrome 10, fetal akinesia deformation sequence 1 (ClinVar).

How common is DOK7 p.Pro222= (c.666G>T) in the general population?

DOK7 p.Pro222= (c.666G>T) is very rare (popmax 8.66e-05%, nfe) (gnomAD).

DOK7 p.Pro222=

c.666G>T · rs756895721 · VCV2938378

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 8.66e-05%, nfe)

Conditions

congenital myasthenic syndrome 10

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.221	benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -0.42	GERP -2, phastCons 0.011
Overall
CADD	1.033	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 8.66e-05% European (non-Finnish) · 1/1,155,210 alleles

Overall 6.39e-05% 1/1,565,418 alleles · very rare exomes 1/1,413,206 · genomes 0/152,212 · joint denominator

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: DOK7
Protein: p.Pro222=
Coding: c.666G>T
MANE Select: NM_173660
dbSNP: rs756895721
Type: single nucleotide variant
Location: chr4:3489690 (GRCh38)
Gene constraint: LOEUF 1.658 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 65.61
Residue 222: the 'disordered' region

Full DOK7 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

congenital myasthenic syndrome 10 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: fetal akinesia deformation sequence 1

Similar variants

DOK7 p.Pro222Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
DOK7 c.331+1G>T Pathogenic ★★ same condition
DOK7 c.332-1G>A Likely pathogenic ★★ same condition
DOK7 c.332-1G>C Likely pathogenic ★★ same condition
DOK7 c.332-1G>T Likely pathogenic ★★ same condition
DOK7 p.Arg158Gln Pathogenic/Likely pathogenic ★★ same condition
DOK7 p.Arg201Ter Pathogenic ★★ same condition
DOK7 p.Cys412Ter Pathogenic ★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/dok7-p-pro222 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown